170720-M-HH269-097 CAMP PENDLETON, Calif. (July 20, 2017) Hospital Corpsman Reginald Granger, left, assigned to 2nd Battalion, 4th Marine Regiment, 1st Marine Division, treats a wounded role player at the Infantry Immersion Trainer facility during prime time training at Marine Corps Base Camp Pendleton, Calif. The IIT is designed to immerse Marines in a realistic urban environment in order to increase their overall combat readiness. (U.S. Marine Corps photo by Sgt. Joshua M. Jackson/Released)